Power generation and energy storage system and network distribution method thereof

Abstract

The invention relates to a power generation and energy storage system and a network distribution method thereof. The method comprises the steps that a wireless communication module of a first power generation and energy storage unit obtains network distribution information from terminal equipment, and network distribution is carried out on the wireless communication module of the first power generation and energy storage unit; after the network distribution of the wireless communication module of the first power generation and energy storage unit succeeds, the control device of the first power generation and energy storage unit sends the network distribution information to the control device of the second power generation and energy storage unit through the parallel operation communication bus; and the second power generation and energy storage unit performs network distribution on a wireless communication module of the second power generation and energy storage unit by using the network distribution information. According to the invention, the problems of large network distribution workload, tedious process and low network distribution efficiency of the power generation and energy storage system in the prior art are solved, the network distribution workload of workers is reduced, and the network distribution efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of communication technology, and in particular to a power generation and energy storage system and a network distribution method thereof. Background Art

[0002] Existing single-unit power generation and energy storage devices are often adapted to a distribution network module for network monitoring and operation and maintenance of the device. The power generation and energy storage system may include multiple single-unit power generation and energy storage devices. In order to perform network monitoring and operation and maintenance on the single-unit devices in the power generation and energy storage system, each single-unit power generation and energy storage device needs to be connected to the network one by one. When connecting each single-unit power generation and energy storage device to the network one by one, it is necessary to frequently perform connection and disconnection operations between the terminal device and the distribution network module to switch the distribution network module. As the number of single-unit power generation and energy storage devices used in the power generation and energy storage system gradually increases, the distribution network workload is large and the process is cumbersome, and the distribution network efficiency is low. Summary of the invention

[0003] The power generation and energy storage system and the network distribution method provided by the embodiments of the present invention do not need to frequently perform connection and disconnection operations between the terminal device and the network distribution module to switch the network distribution module when distributing the network to each power generation and energy storage device, which can at least reduce the network distribution workload of the workers and improve the network distribution efficiency.

[0004] A power generation and energy storage system, comprising: a plurality of power generation and energy storage units; the power generation and energy storage units comprising: power generation and energy storage equipment, a control device for controlling the power generation and energy storage equipment, and a wireless communication module; The AC output ends of the power generation and energy storage devices of the multiple power generation and energy storage units are connected in parallel to access the AC power grid; The wireless communication module is communicatively connected to the control device, and the control devices of the multiple power generation and energy storage units are all connected to the communication bus; The control device is used to send the network configuration information acquired by the wireless communication module to the communication bus, and to acquire the network configuration information used to configure the wireless communication module from the communication bus.

[0005] A network distribution method is applied to a power generation and energy storage system, wherein the power generation and energy storage system includes a plurality of power generation and energy storage units, wherein the power generation and energy storage units include a control device and a wireless communication module, and the control devices of the plurality of power generation and energy storage units are all configured on a parallel communication bus; the network distribution method includes: The wireless communication module of the first power generation and energy storage unit obtains network distribution information from the terminal device, and performs network distribution on the wireless communication module of the first power generation and energy storage unit; After the wireless communication module of the first power generation and energy storage unit is successfully networked, the control device of the first power generation and energy storage unit sends the network distribution information to the control device of the second power generation and energy storage unit through the parallel communication bus, so that the second power generation and energy storage unit can use the network distribution information to network the wireless communication module of the second power generation and energy storage unit.

[0006] A power generation and energy storage system, the power generation and energy storage system comprises a plurality of power generation and energy storage units, the control devices of the plurality of power generation and energy storage units are all configured on a parallel communication bus; the power generation and energy storage unit comprises a control device and a wireless communication module, wherein: The wireless communication module is used to obtain network configuration information from the terminal device to perform network configuration; The control device is used to send the network configuration information to the control devices of other power generation and energy storage units configured on the parallel communication bus through the parallel communication bus after the wireless communication module is successfully networked; The wireless communication module is also used to perform network distribution using the network distribution information obtained from the control device of the other power generation and energy storage unit.

[0007] The power generation and energy storage system and the network distribution method thereof provided by the embodiments of the present invention obtain network distribution information from the terminal device through the wireless communication module of the first power generation and energy storage unit, and perform network distribution on the wireless communication module of the first power generation and energy storage unit; after the wireless communication module of the first power generation and energy storage unit is successfully networked, the control device of the first power generation and energy storage unit sends the network distribution information to the control device of the second power generation and energy storage unit through the parallel communication bus, so that the second power generation and energy storage unit can use the network distribution information to perform network distribution on the wireless communication module of the second power generation and energy storage unit, thereby solving the problems of large network distribution workload, complicated process and low network distribution efficiency of the power generation and energy storage system in the related technology, reducing the network distribution workload of workers and improving the network distribution efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other embodiments can be obtained based on these drawings without creative work.

[0009] Figure 1 The structural block diagram of the power generation and energy storage system provided for this application; Figure 2 A flow chart of the network distribution method provided for this application; Figure 3 Schematic diagram of the changes in the interactive interface of the terminal device provided for this application Figure 1 ; Figure 4 A flowchart for searching and displaying devices to be networked provided for this application; Figure 5 Schematic diagram of the power generation and energy storage system distribution process provided for this application; Figure 6 The preferred flow chart of the power generation and energy storage system distribution network provided in this application; Figure 7 Schematic diagram of the changes in the interactive interface of the terminal device provided for this application Figure 2 . DETAILED DESCRIPTION

[0010] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0011] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0012] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0013] With the rapid development of the new energy photovoltaic energy storage industry, users have an increasing demand for the storage capacity and power of photovoltaic storage equipment. Due to the limited power and storage capacity of single power generation and energy storage equipment, existing solutions mostly use multiple small-power photovoltaic storage devices in parallel on the AC side to form a parallel system, thereby meeting users' capacity expansion needs.

[0014] In the parallel system, each single power generation and energy storage device is installed with a wireless communication module (including a network distribution module). The installer needs to connect the wireless communication module of each power generation and energy storage device separately to perform the key network distribution work of the router, and the wireless communication module needs to be switched frequently in the middle. For example, the terminal device is connected to the wireless communication module of the first power generation and energy storage device to distribute the network to the first power generation and energy storage device, and then the connection between the terminal device and the wireless communication module of the first power generation and energy storage device is disconnected, and then the terminal device is connected to the wireless communication module of the second power generation and energy storage device to distribute the network to the second power generation and energy storage device, and then the connection between the terminal device and the wireless communication module of the second power generation and energy storage device is disconnected; such repeated operations make the network distribution process cumbersome. In addition, with the increase in the number of parallel machines, the workload of network distribution almost doubles, affecting the efficiency of network distribution.

[0015] Considering that in order to improve the efficiency of the distribution network, the parallel system can use a wireless communication module and combine it with the parallel communication bus to monitor multiple devices simultaneously. In this case, the distribution network operator does not need to configure the network of multiple wireless communication modules at the same time, and does not need to frequently switch wireless communication modules. However, in this solution, when the power generation and energy storage device where the wireless communication module that has been configured is located is not powered on, even if other power generation and energy storage devices are powered on, the system will not only be unable to obtain the operating status data of the power generation and energy storage device connected to the wireless communication module, but also cause the operating status data of other power generation and energy storage devices to be unable to be monitored, making the status monitoring reliability of the parallel system poor.

[0016] Using wireless communication modules with wireless self-organizing network capabilities is also a feasible solution to improve the efficiency of network distribution. By using wireless self-organizing network capabilities, power generation and energy storage devices equipped with wireless communication modules can exchange keys through self-organizing network channels to achieve rapid network distribution. However, wireless communication modules with wireless self-organizing network capabilities are expensive.

[0017] Based on the above background, the present application provides a power generation and energy storage system and a network distribution method thereof. The power generation and energy storage system receives and sends network distribution information through the local parallel communication bus of the parallel system, saving the man-hours for manual network distribution. In addition, during the network distribution process, the ciphertext of the network distribution information can be transmitted, and the encryption and decryption process of the network distribution information is controlled inside the wireless communication module, which can avoid data leakage in the parallel communication bus.

[0018] See also Figure 1The structural block diagram of the power generation and energy storage system shown in the figure, the present application provides a power generation and energy storage system, including: multiple power generation and energy storage units; the power generation and energy storage unit 101 includes: a power generation and energy storage device 104, a control device 103 for controlling the power generation and energy storage device, and a wireless communication module 102; the AC output ends of the power generation and energy storage devices of the multiple power generation and energy storage units are connected in parallel to access the AC power grid; the wireless communication module is communicatively connected to the control device, and the control devices of the multiple power generation and energy storage units are all connected to the parallel communication bus; the control device is used to send the distribution network information obtained by the wireless communication module to the parallel communication bus, and obtain the distribution network information used to configure the wireless communication module from the parallel communication bus.

[0019] In the embodiment of the present application, the power generation and energy storage unit includes a power generation and energy storage device, which may include a photovoltaic device and an energy storage device. The power generation and energy storage device uses the photovoltaic device to directly convert solar radiation energy into electrical energy, and uses the energy storage device to store electrical energy. The electrical energy generated or stored by the power generation and energy storage device can be connected to the AC power grid.

[0020] In an embodiment of the present application, the power generation and energy storage system may include multiple power generation and energy storage units. The AC output ends of the power generation and energy storage devices of the multiple power generation and energy storage units in the power generation and energy storage system are connected in parallel and connected to the AC power grid, which can increase the storage capacity of the entire power generation and energy storage system and increase the power of the entire power generation and energy storage system.

[0021] The power generation and energy storage unit also includes a control device for controlling the power generation and energy storage equipment. The control device is connected to the wireless communication module, so that the network distribution information can be obtained from the wireless communication module. The control devices of the multiple power generation and energy storage units are all connected to the parallel communication bus, and the control devices of the multiple power generation and energy storage units are all configured on the parallel communication bus. The control device can forward the network distribution information obtained from the wireless communication module to the control devices of other power generation and energy storage units in the power generation and energy storage system using the parallel communication bus. The control devices of other power generation and energy storage units can also obtain the network distribution information of the wireless communication module used to configure the power generation and energy storage unit in which they are located from the parallel communication bus.

[0022] The network distribution information can be used to determine the communication mode of the network and the network to be connected. For example, the network can use but is not limited to the following communication modes: PLC (Power Line Communication), CAN (Controller Area Network), RS485 (a bus mode), RS232 (asynchronous transmission standard interface) and Ethernet, etc. By setting the network distribution information, the communication mode can be selected, so that the power generation and energy storage system can be applied to more scenarios and environments.

[0023] In the present application, multiple power generation and energy storage units are included; the power generation and energy storage units include: power generation and energy storage equipment, a control device for controlling the power generation and energy storage equipment, and a wireless communication module; the AC output ends of the power generation and energy storage equipment of the multiple power generation and energy storage units are connected in parallel to access the AC power grid; the wireless communication module is communicatively connected to the control device, and the control devices of the multiple power generation and energy storage units are all connected to the parallel communication bus; the control device is used to send the network distribution information obtained by the wireless communication module to the parallel communication bus, and obtain the network distribution information used to configure the wireless communication module from the parallel communication bus. After the terminal device establishes a connection with any wireless communication module in the power generation and energy storage system of the present application, network distribution information is sent to the wireless communication module, and the wireless communication module obtains the network distribution information and automatically accesses the network based on the received network distribution information. Since the wireless communication module is connected to the control device for communication, the control device can obtain the network distribution information from the wireless communication module. Since the control devices of the multiple power generation and energy storage units are all connected to the parallel communication bus, the control device that obtains the network distribution information can use the parallel communication bus to send the network distribution information to other control devices connected to the parallel communication bus. In the power generation and energy storage system, other control devices connected to the parallel communication bus can receive the network distribution information and send the network distribution information to the wireless communication modules of each power generation and energy storage unit. Furthermore, these wireless communication modules can automatically access the network based on the received network distribution information to realize the network distribution of each power generation and energy storage unit in the power generation and energy storage system, thereby greatly reducing the workload during network distribution and improving network distribution efficiency.

[0024] In a possible implementation, the wireless communication module is used to obtain network configuration information from the terminal device for network configuration. The control device is used to send the network configuration information to the control devices of other power generation and energy storage units configured on the parallel communication bus through the parallel communication bus after the wireless communication module successfully configures the network. The wireless communication module is also used to use the network configuration information obtained from the control devices of other power generation and energy storage units for network configuration.

[0025] In one possible implementation, the control device is used to broadcast the distribution network information to the control devices of other power generation and energy storage units; or to search for the control devices of other power generation and energy storage units on the parallel communication bus, obtain the network addresses of the control devices of other power generation and energy storage units on the parallel communication bus, and broadcast the distribution network information to the control devices of other power generation and energy storage units one by one or simultaneously according to the network address.

[0026] In a possible implementation, the control device is also used to encrypt the distribution network information before sending it to the control devices of other power generation and energy storage units to obtain an encrypted message; transparently transmit the encrypted message to the control devices of other power generation and energy storage units through the parallel communication bus; and decrypt the encrypted message after receiving the encrypted message obtained from the control devices of other power generation and energy storage units.

[0027] In a possible implementation, the wireless communication module is further used to obtain a list of devices to be networked from the terminal device; wherein other power generation and energy storage units are determined based on the list of devices to be networked.

[0028] In a possible implementation, the control device is also used to receive the network distribution results of the wireless communication modules of other power generation and energy storage units through the parallel communication bus; the wireless communication module is also used to send the network distribution results to the terminal device.

[0029] In one possible implementation, the control device includes: a network configuration information transparent transmission module, which is used to obtain a first specific message from the wireless communication module and transparently transmit the first specific message to the parallel communication bus, and to obtain a second specific message from the parallel communication bus and transparently transmit the second specific message to the wireless communication module, wherein the first specific message and the second specific message carry network configuration information.

[0030] In the embodiment of the present application, the message obtained by the network configuration information transparent transmission module from the wireless communication module and then sent to the parallel communication bus is called the first specific message (equivalent to the above-mentioned one encrypted message), and the message obtained by the network configuration information transparent transmission module from the parallel communication bus and then sent to the wireless communication module is called the second specific message (equivalent to the above-mentioned another encrypted message). The first specific message and the second specific message carry network configuration information.

[0031] When the power generation and energy storage system starts to be networked, a terminal device is used to establish a connection with a wireless communication module of any power generation and energy storage unit in the power generation and energy storage system, and the wireless communication module uses the connection to obtain network distribution information. It should be noted that the wireless communication module connected to the terminal device here can be a wireless communication module of a designated power generation and energy storage unit, or a wireless communication module of a randomly selected power generation and energy storage unit. The wireless communication module generates a message type that matches the network distribution information based on the network distribution requirement information carried in the network distribution information, and obtains a first specific message. The network distribution information transparent transmission module of the control device obtains the first specific message from the wireless communication module, and transparently transmits the first specific message to the parallel communication bus. Afterwards, the control modules of other power generation and energy storage units in the power generation and energy storage system obtain the second specific message from the parallel communication bus, and transparently transmit the second specific message to the connected wireless communication module. The wireless communication module that receives the second specific message automatically performs network distribution according to the network distribution information in the second specific message.

[0032] In the embodiment of the present application, the existing parallel communication bus between the power generation and energy storage equipment can be used to transmit the distribution network information in the form of the first specific message and the second specific message between the control devices, thereby providing the distribution network information for the automatic networking of each wireless communication module. In a possible implementation, the first specific message and the second specific message carry ciphertext of network configuration information, and the wireless communication module further includes: an encryption and decryption module, which is used to encrypt the network configuration information obtained by the wireless communication module to obtain the first specific message, or decrypt the second specific message to obtain plain text of the network configuration information.

[0033] In an embodiment of the present application, encryption and decryption of network configuration information can be achieved through an encryption and decryption module to ensure secure transmission of the network configuration information. In addition, the encryption and decryption module is arranged in a wireless communication module, so that the encryption and decryption processing can be completed in the wireless communication module to ensure that the network configuration information is always transmitted in ciphertext.

[0034] Taking into account that the power generation and energy storage equipment may shut down and exit the grid, in a possible implementation, the power generation and energy storage equipment includes: an inverter, an energy storage battery and a power generation equipment; wherein the first DC terminal of the inverter is connected to the power generation equipment, the second DC terminal of the inverter is connected to the energy storage battery, and the control device is used to control the off-grid mode and start / stop state of the inverter.

[0035] In a possible implementation, the wireless communication module includes: a device connection unit and a data processing unit; the device connection unit is used to establish a communication connection with a terminal device to obtain network configuration information sent by the terminal device; the data processing unit is used to generate a message to be transmitted based on the network configuration information.

[0036] In an embodiment of the present application, the data processing unit may determine the message format requirements based on the network configuration information, and then convert the network configuration information into a message to be transmitted according to the message format requirements.

[0037] In a possible implementation manner, the wireless communication module further includes: a network configuration unit, configured to determine a network connection mode and a target network according to the network configuration information, and access the target network according to the network connection mode.

[0038] The network connection method required and the target network to which the power generation and energy storage equipment is to be connected can be configured through the network distribution information. The network distribution unit of the wireless communication module can determine the network connection method and the target network through the network distribution information, and access the target network according to the network connection method.

[0039] In a possible implementation, the control device further includes: a network configuration result transparent transmission module, which is used to obtain a first network configuration result from the wireless communication module, and transparently transmit the first network configuration result to the parallel communication bus, and obtain a second network configuration result from the parallel communication bus, and transparently transmit the second network configuration result to the wireless communication module, so that the wireless communication module sends the network configuration result to the terminal device.

[0040] In the embodiment of the present application, after each wireless communication module completes the network configuration based on the network configuration information obtained from the parallel communication bus, the network configuration result may be network configuration success, network configuration failure, etc. The network configuration result obtained by the network configuration result transparent transmission module from the wireless communication module and then sent to the parallel communication bus is called the first network configuration result, and the network configuration result obtained by the network configuration result transparent transmission module from the parallel communication bus and then sent to the wireless communication module is called the second network configuration result.

[0041] The network configuration result transparent transmission module corresponding to the wireless communication module that performs the network configuration operation obtains the first network configuration result of the wireless communication module, and sends the first network configuration result to the parallel communication bus. The network configuration result transparent transmission module corresponding to the power generation and energy storage unit connected to the terminal device can obtain the second network configuration result from the parallel communication bus, and then send the second network configuration result to the wireless communication module connected to itself, so that the wireless communication module sends the second network configuration result to the terminal device.

[0042] In the embodiment of the present application, the network configuration result can be fed back to the terminal device based on the parallel communication bus so that the user can understand the network configuration status in real time.

[0043] The present application also provides a distribution network method applied to the above-mentioned power generation and energy storage system. Figure 2 This is a flow chart of a network distribution method provided by this application, such as Figure 2 As shown, the process includes the following steps: Step S201: The wireless communication module of the first power generation and energy storage unit obtains network distribution information from a terminal device, and performs network distribution on the wireless communication module of the first power generation and energy storage unit.

[0044] Step S202, after the wireless communication module of the first power generation and energy storage unit is successfully networked, the control device of the first power generation and energy storage unit sends the network distribution information to the control device of the second power generation and energy storage unit through the parallel communication bus, so that the second power generation and energy storage unit can use the network distribution information to network the wireless communication module of the second power generation and energy storage unit.

[0045] The first power generation and energy storage unit mentioned above can be any power generation and energy storage unit in the power generation and energy storage system, and the first power generation and energy storage unit is directly connected to the terminal device through the wireless communication module to obtain data from the terminal device, such as obtaining distribution network information. Other part or all of the power generation and energy storage units in the power generation and energy storage system other than the first power generation and energy storage unit mentioned above are the second power generation and energy storage units, and the number of the second power generation and energy storage units can be one or more.

[0046] In a possible implementation, the second power generation and energy storage unit is all other power generation and energy storage units configured on the parallel communication bus. In this case, the first power generation and energy storage unit does not need to obtain the network address of the second power generation and energy storage unit, but broadcasts the network distribution information to the control device of the second power generation and energy storage unit by sending a broadcast message on the parallel communication bus. After receiving the broadcast message on the parallel communication bus, the control device of the second power generation and energy storage unit parses the plaintext or ciphertext of the network distribution information in the broadcast message, and transparently transmits the plaintext or ciphertext of the network distribution information to its corresponding wireless communication module, so that the wireless communication module can perform network distribution according to the network distribution information.

[0047] In another possible implementation, the second power generation and energy storage unit is part or all of the other power generation and energy storage units configured on the parallel communication bus. The first power generation and energy storage unit first searches for the control device of the second power generation and energy storage unit on the parallel communication bus to obtain the network address of the control device of the second power generation and energy storage unit on the parallel communication bus. Then, the control device of the first power generation and energy storage unit unicasts the network distribution information to the control device of the second power generation and energy storage unit one by one or simultaneously according to the searched network address. After receiving the unicast message sent to itself on the parallel communication bus, the control device of the second power generation and energy storage unit parses the plaintext or ciphertext of the network distribution information in the unicast message, and transparently transmits the plaintext or ciphertext of the network distribution information to its corresponding wireless communication module, so that the wireless communication module can perform network distribution according to the network distribution information.

[0048] It should be noted that the above-mentioned "one-by-one unicast" means that there is an obvious delay between each unicast message sent, such as the delay in waiting for the device receiving the unicast message to reply with a confirmation message, and the delay in waiting for the device receiving the unicast message to reply with the network configuration result. "Simultaneous unicast" means that there is no obvious delay between sending multiple unicast messages, and usually multiple unicast messages are sent sequentially. The advantage of one-by-one unicast compared to simultaneous unicast is that when the bandwidth of the parallel communication bus is small, it can avoid data transmission congestion on the parallel communication bus, and can also avoid the impact of the transmission of network configuration information on other normal services transmitted on the parallel communication bus.

[0049] In the above embodiment, when the wireless communication module of the first power generation and energy storage unit obtains the network distribution information from the terminal device, it also obtains a list of devices to be networked from the terminal device, and the list of devices to be networked includes the identification information of the power generation and energy storage units (or their control devices) to be networked. The control device of the first power generation and energy storage unit determines the network address of the control device of the second power generation and energy storage unit based on the identification information.

[0050] In a possible implementation, there is a central node in the power generation and energy storage system, which is responsible for maintaining the status of the control device of the power generation and energy storage unit configured on the parallel communication bus, including but not limited to when the control device of the power generation and energy storage unit is powered on, after the powered-on power generation and energy storage unit completes initialization (including the configuration operation of the network address), its control device will broadcast its own information on the parallel communication bus, and the central node will record the identification information of the newly powered-on power generation and energy storage unit (or its control device) and its corresponding network address. The control device of the first power generation and energy storage unit obtains the network address of the control device of the second power generation and energy storage unit by querying the central node for the network address of the control device of the power generation and energy storage unit in the list of network devices to be connected.

[0051] In another possible implementation, there is no central node in the power generation and energy storage system, and each power generation and energy storage unit is a peer node. When a power generation and energy storage unit is newly powered on, after the powered-on power generation and energy storage unit completes initialization (including the configuration operation of the network address), its control device will broadcast its own information on the parallel communication bus. After the control devices of other power generation and energy storage units that have been powered on on the parallel communication bus listen to the broadcast message, they parse the broadcast message to obtain the identification information of the newly powered-on power generation and energy storage unit (or its control device) and its corresponding network address; thereafter, the control device of the powered-on power generation and energy storage unit will also reply its own information (including identification information and network address) to the control device of the newly powered-on power generation and energy storage unit in the form of a unicast message. In this way, a list of all power generation and energy storage units (or their control devices) that have been powered on on the parallel communication bus is maintained in each power generation and energy storage unit. The control device of the first power generation and energy storage unit obtains the network address of the control device of the second power generation and energy storage unit by searching the list for the network address of the control device of the power generation and energy storage unit in the list of network devices to be distributed.

[0052] In a possible embodiment, after searching for the second power generation and energy storage units that are not networked, the terminal device will display these second power generation and energy storage units that are not networked as devices to be networked on the software of the terminal device, and can provide an operation control for the user to partially select or fully select all devices to be networked, such as Figure 3 and Figure 4 shown.

[0053] There is a security risk that the plain text of the distribution network information is easily leaked when it is transmitted on the parallel communication bus. In order to reduce the security risk, the above-mentioned encryption and decryption module is also integrated in the wireless communication module. In a possible implementation, before the control device of the first power generation and energy storage unit sends the distribution network information to the control device of the second power generation and energy storage unit through the parallel communication bus, the control device of the first power generation and energy storage unit encrypts the distribution network information to obtain an encrypted message; the control device of the first power generation and energy storage unit transparently transmits the encrypted message to the control device of the second power generation and energy storage unit through the parallel communication bus, so that the control device of the second power generation and energy storage unit can decrypt the encrypted message after receiving the encrypted message to obtain the distribution network information.

[0054] By encrypting and decrypting the network configuration information in the wireless communication module and transparently transmitting the encrypted message on the parallel communication bus, the plain text of the network configuration information is no longer transmitted on the parallel communication bus, thereby ensuring the information security strength of the network configuration information transmitted on the parallel communication bus and preventing the network configuration information from being maliciously monitored.

[0055] In a possible implementation, the control device of the first power generation and energy storage unit receives the network distribution result of the wireless communication module of the second power generation and energy storage unit through the parallel communication bus; the wireless communication module of the first power generation and energy storage unit sends the network distribution result to the terminal device. In this way, the terminal device can obtain the network distribution status of the equipment to be networked in the power generation and energy storage system in a timely manner.

[0056] See also Figure 5 The schematic diagram of the power generation and energy storage system distribution process is shown in the figure. Figure 6 The preferred flow chart of the power generation and energy storage system distribution network provided in this application is as follows: Figure 5 and Figure 6 The steps of grid distribution for power generation and energy storage systems are described.

[0057] The power generation and energy storage system can be distributed to the grid in the following steps: 1) The user uses a terminal device (such as but not limited to a mobile phone, a computer PC, etc., which has the ability to directly connect to the module wirelessly) to directly connect to the wireless communication module 1 of any power generation and energy storage unit to be connected to the network in the power generation and energy storage system (such as but not limited to Bluetooth, WIFI, etc.).

[0058] 2) The user then enters the network configuration information into the terminal application / software on the mobile device through some interactive methods such as scanning a code, manual input or communication. The network configuration information may include the networking information of the target access network device (such as a router) that needs to be configured (such as SSID encryption method, key and other necessary information for accessing the network).

[0059] 3) The terminal application / software transmits the network distribution information entered in step 2) to the wireless communication module 1 through a direct wireless connection channel with the wireless communication module 1 of the power generation and energy storage unit to be networked.

[0060] 4) After receiving the network distribution information, the wireless communication module 1 will autonomously connect the module to the target network and transmit the encrypted key information to the control device 1 of the connected power generation and energy storage unit.

[0061] 5) After receiving the network distribution information sent by the wireless communication module 1 connected to the device, the control device 1 of the power generation and energy storage unit directly publishes the network distribution information to the parallel communication bus (such as but not limited to PLC, CAN, RS485, RS232 and Ethernet, etc.) in a broadcast / response manner. After the control devices 2~N of other power generation and energy storage units on the parallel communication bus monitor the relevant network distribution information, they intercept and retain it in the cache of the device, and notify the wireless communication module 2~N connected to the device to obtain the network distribution information.

[0062] 7) After wireless communication modules 2~N obtain the network configuration information, they will decrypt and verify the network configuration information. If the information is correct, they will autonomously connect the module to the target network.

[0063] 8) After the wireless communication modules 2~N complete the network configuration, they inform the control devices 2~N of the network configuration results, which are then fed back to the wireless communication module 1 via the parallel communication bus by the control devices 2~N.

[0064] 9) The software running on the terminal device obtains the network configuration progress and results by querying the wireless communication module 1, and presents them in the software of the terminal device, such as Figure 7 As shown. So far the system network configuration work is completed.

[0065] In the above distribution process, the installer only needs to perform distribution work on any one power generation and energy storage unit, for example, Figure 3 The leftmost power generation and energy storage unit is used for network distribution. After the network distribution is completed, the power generation and energy storage unit can distribute the obtained key information to subsequent devices. After the subsequent devices receive the network distribution key, they automatically complete the network distribution work.

[0066] In particular, considering that some customers are sensitive to key information (such as those involving some data privacy regulations), the wireless communication module can directly use encrypted messages to send and receive keys when distributing keys through the parallel communication bus. The control device of the power generation and energy storage unit does not need to perform data decryption. The encryption and decryption work is completely controlled within the wireless communication module, avoiding the problem of key leakage on the parallel communication bus.

[0067] The present application provides a power generation and energy storage system, which utilizes the parallel communication bus of the existing parallel system between power generation and energy storage equipment to interactively transmit network keys between power generation and energy storage equipment. After the installer sends the network distribution information to the wireless communication module of any power generation and energy storage unit, the control device of the power generation and energy storage unit can synchronize the network key to the control device of other power generation and energy storage units through the parallel communication bus, and then use the wireless communication module connected to the control device to automatically complete the network distribution work of the remaining equipment, greatly saving the network distribution time of the installer and improving the installation experience of the installation user. From the perspective of improving the installation experience of the installer, the present application uses the existing local communication lines between power generation and energy storage equipment to complete the network distribution key interaction, solve the network distribution pain points during the product installation process, and bring a better installation experience to the installer with small innovative optimization points.

[0068] The present application also provides a distribution network system, including the above-mentioned power generation and energy storage system and a terminal device; the terminal device is communicatively connected to any wireless communication module of the power generation and energy storage system. Therefore, the distribution network system includes all the technical effects of the above-mentioned power generation and energy storage system. Since the technical effects of the power generation and energy storage system have been described in detail above, they will not be repeated here.

[0069] In a possible implementation, the terminal device includes: a network configuration instruction acquisition module.

[0070] In the embodiment of the present application, the network configuration instruction acquisition module can be used to obtain the network configuration instruction configured by the user and obtain the network configuration information. The specific acquisition method of the network configuration instruction can be determined according to the use environment of the terminal device, and the embodiment of the present application does not specifically limit this.

[0071] In a possible implementation manner, the network configuration instruction acquisition module includes one or more of the following devices: a scanning device, a communication device, and an input device.

[0072] In an embodiment of the present application, the scanning device can obtain the network configuration instruction by scanning the specified information, the communication device can obtain the network configuration instruction through data interaction, and the input device can be used to obtain the network configuration instruction through manual input by the user.

[0073] It should be noted that the term "including" and its variations used in the embodiments of the present invention are open inclusions, that is, "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The modifications of "one" and "multiple" mentioned in the embodiments of the present invention are illustrative and not restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0074] The various steps described in the method implementation methods provided by the embodiments of the present invention can be performed in different orders and / or in parallel. In addition, the method implementation methods may include additional steps and / or omit the steps shown. The scope of protection of the present invention is not limited in this respect.

[0075] The term "embodiment" in this specification refers to specific features, structures or characteristics described in conjunction with the embodiment that can be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. The various embodiments in this specification are described in a related manner, and the same and similar parts between the various embodiments refer to each other. In particular, for the device, equipment, and system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts refer to the partial description of the method embodiment.

[0076] The above-described embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of protection. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the attached claims.

Claims

1. A power generation and energy storage system, characterized in that: include: Multiple power generation and energy storage units; The power generation and energy storage unit comprises: a power generation and energy storage device, a control device for controlling the power generation and energy storage device, and a wireless communication module; The AC output ends of the power generation and energy storage devices of the multiple power generation and energy storage units are connected in parallel to access the AC power grid; The wireless communication module is communicatively connected to the control device, and the control devices of the multiple power generation and energy storage units are all connected to the communication bus; The control device is used to send the network configuration information acquired by the wireless communication module to the communication bus, and to acquire the network configuration information used to configure the wireless communication module from the communication bus.

2. The system according to claim 1, characterized in that The control device comprises: A network configuration information transparent transmission module is used to obtain a first specific message from the wireless communication module and transparently transmit the first specific message to the communication bus, and to obtain a second specific message from the communication bus and transparently transmit the second specific message to the wireless communication module, wherein the first specific message and the second specific message carry network configuration information.

3. The system according to claim 2, characterized in that The first specific message and the second specific message carry ciphertext of network configuration information, and the wireless communication module further includes: The encryption and decryption module is used to encrypt the network configuration information obtained by the wireless communication module to obtain the first specific message, or decrypt the second specific message to obtain the plain text of the network configuration information.

4. The system according to claim 1, characterized in that The power generation and energy storage equipment includes: an inverter, an energy storage battery and a power generation equipment; wherein, The first DC terminal of the inverter is connected to the power generation equipment, the second DC terminal of the inverter is connected to the energy storage battery, and the control device is used to control the off-grid mode and start-stop state of the inverter.

5. The system according to claim 1, characterized in that The wireless communication module includes: a device connection unit and a data processing unit; The device connection unit is used to establish a communication connection with the terminal device to obtain the network configuration information sent by the terminal device; The data processing unit is used to generate a message to be transmitted based on the network configuration information.

6. The system according to claim 5, characterized in that The wireless communication module further includes: a network configuration unit, configured to determine a network connection mode and a target network according to the network configuration information, and to access the target network according to the network connection mode.

7. The system according to claim 1, characterized in that The control device further comprises: The network configuration result transparent transmission module is used to obtain the first network configuration result from the wireless communication module and transparently transmit the first network configuration result to the communication bus, and to obtain the second network configuration result from the communication bus and transparently transmit the second network configuration result to the wireless communication module, so that the wireless communication module sends the network configuration result to the terminal device.

8. A distribution network method, applied to a power generation and energy storage system, wherein the power generation and energy storage system comprises a plurality of power generation and energy storage units, wherein the power generation and energy storage units comprise a control device and a wireless communication module, and the control devices of the plurality of power generation and energy storage units are all configured on a parallel communication bus; characterized in that: The network distribution method comprises: The wireless communication module of the first power generation and energy storage unit obtains network distribution information from the terminal device, and performs network distribution on the wireless communication module of the first power generation and energy storage unit; After the wireless communication module of the first power generation and energy storage unit is successfully networked, the control device of the first power generation and energy storage unit sends the network distribution information to the control device of the second power generation and energy storage unit through the parallel communication bus, so that the second power generation and energy storage unit can use the network distribution information to network the wireless communication module of the second power generation and energy storage unit.

9. The method according to claim 8, characterized in that The number of the second power generation and energy storage unit is one or more; wherein the control device of the first power generation and energy storage unit sends the distribution network information to the control device of the second power generation and energy storage unit through the parallel communication bus, including: The control device of the first power generation and energy storage unit broadcasts the distribution network information to the control device of the second power generation and energy storage unit; or The control device of the first power generation and energy storage unit searches for the control device of the second power generation and energy storage unit on the parallel communication bus, obtains the network address of the control device of the second power generation and energy storage unit on the parallel communication bus, and the control device of the first power generation and energy storage unit broadcasts the distribution network information to the control device of the second power generation and energy storage unit one by one or simultaneously according to the network address.

10. The method according to claim 8, characterized in that The method further comprises: Before the control device of the first power generation and energy storage unit sends the network distribution information to the control device of the second power generation and energy storage unit through the parallel communication bus, the control device of the first power generation and energy storage unit encrypts the network distribution information to obtain an encrypted message; The control device of the first power generation and energy storage unit transparently transmits the encrypted message to the control device of the second power generation and energy storage unit through the parallel communication bus, so that the control device of the second power generation and energy storage unit decrypts the encrypted message after receiving the encrypted message to obtain the distribution network information.

11. The method according to claim 8, characterized in that The method further comprises: The wireless communication module of the first power generation and energy storage unit obtains a list of devices to be networked from the terminal device; wherein the second power generation and energy storage unit is determined based on the list of devices to be networked.

12. The method according to any one of claims 8 to 11, characterized in that The method further comprises: The control device of the first power generation and energy storage unit receives the network distribution result of the wireless communication module of the second power generation and energy storage unit through the parallel communication bus; The wireless communication module of the first power generation and energy storage unit sends the network distribution result to the terminal device.

13. A power generation and energy storage system, comprising a plurality of power generation and energy storage units, wherein the control devices of the plurality of power generation and energy storage units are all configured on a parallel communication bus; characterized in that: The power generation and energy storage unit includes a control device and a wireless communication module, wherein: The wireless communication module is used to obtain network configuration information from the terminal device to perform network configuration; The control device is used to send the network configuration information to the control devices of other power generation and energy storage units configured on the parallel communication bus through the parallel communication bus after the wireless communication module is successfully networked; The wireless communication module is also used to perform network distribution using the network distribution information obtained from the control device of the other power generation and energy storage unit.

14. The power generation and energy storage system according to claim 13, characterized in that: The control device is used to broadcast the distribution network information to the control devices of the other power generation and energy storage units; or to search for the control devices of the other power generation and energy storage units on the parallel communication bus, obtain the network addresses of the control devices of the other power generation and energy storage units on the parallel communication bus, and unicast the distribution network information to the control devices of the other power generation and energy storage units one by one or simultaneously according to the network addresses.

15. The power generation and energy storage system according to claim 13, characterized in that: The control device is further used to encrypt the network distribution information to obtain an encrypted message before sending the network distribution information to the control devices of the other power generation and energy storage units; and transparently transmit the encrypted message to the control devices of the other power generation and energy storage units through the parallel communication bus; And after receiving the encrypted message obtained from the control device of the other power generation and energy storage unit, decrypting the encrypted message.

16. The power generation and energy storage system according to claim 13, characterized in that: The wireless communication module is further used to obtain a list of devices to be networked from the terminal device; wherein the other power generation and energy storage units are determined based on the list of devices to be networked.

17. The power generation and energy storage system according to any one of claims 13 to 16, characterized in that: The control device is also used to receive the network configuration results of the wireless communication modules of the other power generation and energy storage units through the parallel communication bus; the wireless communication module is also used to send the network configuration results to the terminal device.

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